[Beowulf] [upgrade strategy] Intel CPU design bug & security flaw - kernel fix imposes performance penalty

Prentice Bisbal pbisbal at pppl.gov
Fri Jan 5 14:32:19 PST 2018

On 01/05/2018 02:14 PM, Christopher Samuel wrote:
> On 06/01/18 03:46, Jonathan Aquilina wrote:
>> Chris on a number of articles I read they are saying AMD's are not 
>> affected by this.
> That's only 1 of the 3 attacks to my understanding. The Spectre paper 
> says:
> # Hardware. We have empirically verified the vulnerability of several
> # Intel processors to Spectre attacks,  including Ivy Bridge, Haswell
> # and Skylake based processors.    We  have  also  verified  the
> # attack’s  applicability to  AMD  Ryzen  CPUs.   Finally,  we have
> # also  successfully mounted Spectre attacks on several Samsung and
> # Qualcomm processors (which use an ARM architecture) found in popular
> # mobile phones.

According to several articles I read today:

Meltdown (1 exploit)is Intel-specific
Spectre  (2 different exploits) affects just about every processor on 
the planet.

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